Method and system for automatically configuring I/O port

ABSTRACT

The present disclosure provides a method and a system for automatically configuring an I/O port. The method applied to a central processor includes: receiving request information from a controlled device, the request information carrying a type of a signal required by the controlled device, and sending, according to the type of the signal, a configuration instruction to a control device, and instructing the control device to configure the I/O port according to the configuration instruction. The controlled device is connected to the central processing unit, or the controlled device is connected to the central processor by means of the control device.

CROSS REFERENCE TO RELATED APPLICATIONS

This application is based on and claims priority to Chinese PatentApplication No. 201811489061.3, filed on Dec. 6, 2018, the entirecontent of which is incorporated herein in its entirety. Thisapplication is a national phase under 35 U.S.C. § 120 of internationalpatent application PCT/CN2019/091070, entitled “METHOD AND SYSTEM FORAUTOMATICALLY CONFIGURING I/O PORT” and filed on Jun. 13, 2019, thecontent of which is also hereby incorporated by reference.

FIELD

The present disclosure relates to a field of communication technology,and in particular, relates to a method and a system for automaticallyconfiguring an I\O port.

BACKGROUND

At present, automatic control devices such as programmable logiccontrollers (PLCs), or direct digital control (DDC,) systems are rapidlyspreading. Such automatic control devices are mainly used forcentralized control of various large-scale machineries or complexequipment. The control device itself integrates multiple types of inputand output interfaces. These interfaces include digital input and outputinterfaces, and analog input and output interfaces. The analog input andoutput interfaces further include voltage input and output interfaces,current input and output interfaces, temperature sensing bulb detectinginterface, and the like. In order to enhance the function of a port andimprove the versatility of the port, the port is designed as amultiplexed mode. That is, circuits with all the above functions areintegrated in one port. A software configuration method is used toswitch the port to have any of the above functions. Due to differentfunctions, the corresponding internal implementation circuits aredifferent, so requirements for parameters of input and output signalsare also different. If the input and output signals do not match theinterface, the control device or a controlled device is easy to bedamaged.

However, a configuration method for an I/O port includes manuallyverifying types and parameters of an output signal or an input signalrequired by an external controlled device, and configuring the functionsof the I/O port of the control device via a software to match the typesof the input or output signals of the controlled device, and finallyconnecting the input and output interfaces between two modules.Nevertheless, an operator may forget to cut off the input and outputinterfaces and configure the control device, or an engineer maymisoperate during in the process of configuring the port type of thecontrol device, which will cause the input and output signals not tomatch the port type, thus causing damage to the control device or thecontrolled device.

Regarding the problem that the device is damaged due to improperoperation in the process of manually configuring the I/O port in therelated art, no effective solution has been proposed yet.

SUMMARY

At least some of the embodiments of the present disclosure provide amethod and a system for automatically configuring an I/O port, to atleast partially solve a problem that a device is damaged due to improperoperation in a process of manually configuring the I/O port in therelated art.

In one of the embodiments according to the present disclosure, a systemfor automatically configuring an I/O port is provided, and the systemincludes a central processing unit, a control device, and a controlleddevice.

The controlled device is connected to the central processing unit orconnected to the central processing unit via the control device, and isconfigured to send request information to the central processing unit,and the request information carries a type of a signal required by thecontrolled device.

The central processing unit is connected to the control device, and isconfigured to send a configuration instruction to the control deviceaccording to the type of the signal.

The control device is configured to configure the I/O port according tothe configuration instruction.

In one embodiment, when the controlled device is connected to thecentral processing unit, the controlled device is connected to thecentral processing unit via a communication line or a feedback responseline.

When the controlled device is connected to the central processing unitvia the control device, the controlled device is connected to thecontrol device via the communication line or the feedback response line.

In one embodiment, the central processing unit is further configured toreceive the request information sent by the controlled device when thecontrolled device is connected to the central processing unit, andreceive the request information sent from the controlled device to thecontrol device and forwarded by the control device when the controlleddevice is connected to the central processing unit via the controldevice.

In one embodiment, the control device is further configured to, afterconfiguring the I/O port according to the configuration instruction,feedback information that the I/O port has been successfully configuredto the central processing unit.

The central processing unit is further configured to, after receivingthe information that the I/O port has been successfully configured, sendan instruction to the control device or the controlled device accordingto the type of the signal.

In one of the embodiments according to the present disclosure, a methodfor automatically configuring an I/O port, applied to the centralprocessing unit above, includes:

receiving the request information from the controlled device, therequest information carrying the type of the signal required by thecontrolled device; and

sending the configuration instruction to the control device according tothe type of the signal, and instructing the control device to configurethe I/O port according to the configuration instruction;

the controlled device is connected to the central processing unit, orthe controlled device is connected to the central processing unit viathe control device.

In one embodiment, when the controlled device is connected to thecentral processing unit, the receiving the request information from thecontrolled device includes:

receiving the request information sent by the controlled device; and

when the controlled device is connected to the central processing unitvia the control device, the receiving the request information from thecontrolled device includes:

receiving the request information sent from the controlled device to thecontrol device and forwarded by the control device.

In one embodiment, after the sending the configuration instruction tothe control device according to the type of the signal and instructingthe control device to configure the I/O port, the method furtherincludes:

receiving information fed back by the control device that the I/O porthas been successfully configured; and

sending an instruction to the control device or to the controlled deviceaccording to the type of the signal.

In one embodiment, the type of the signal is any one of the followingsix types:

an analog voltage input signal, an analog current input signal, adigital voltage input signal, an analog voltage output signal, an analogcurrent output signal, and a digital voltage output signal.

In one embodiment, the sending the instruction to the control deviceaccording to the type of the signal includes:

when the type of the signal is any one of the analog voltage inputsignal, the analog current input signal, and the digital voltage inputsignal, sending control information to the control device, so that thecontrol device sends the signal to the controlled device according tothe control information.

The instruction includes the control information.

In one embodiment, when the controlled device is connected to thecentral processing unit, the instruction is sent to the controlleddevice according to the type of the signal.

The sending the instruction to the controlled device according to thetype of the signal includes: when the type of the signal is any one ofthe analog voltage output signal, the analog current output signal, andthe digital voltage output signal, sending identification information tothe controlled device.

The instruction comprises the identification information; theidentification information is configured to inform the controlled devicethat the I/O port has been successfully configured, so that thecontrolled device sends the signal to the control device.

In one embodiment, when the controlled device is connected to thecentral processing unit via the control device, the instruction is sentto the control device according to the type of the signal. The sendingthe instruction to the control device according to the type of thesignal includes:

when the type of the signal is any one of the analog voltage outputsignal, the analog current output signal, and the digital voltage outputsignal, sending identification information to the control device, sothat the control device forwards the identification information to thecontrolled device.

The instruction comprises the identification information; theidentification information is configured to inform the controlled devicethat the I/O port has been successfully configured, so that thecontrolled device sends the signal to the control device.

In one embodiment, the controlled device is any one of a sensor, avalve, and a motor.

In one of the embodiments according to the present disclosure, a methodfor automatically configuring an I/O port is further provided. Themethod is applied to the controlled device as described above. Themethod includes:

sending the request information to the central processing unit. Therequest information carries the type of the signal required by thecontrolled device, so that the central processing unit sends theconfiguration instruction to the control device according to the type ofthe signal.

The configuration instruction is configured to instruct the controldevice to configure the I/O port; the controlled device is connected tothe central processing unit, or, the controlled device is connected tothe central processing unit via the control device.

In one embodiment, when the controlled device is connected to thecentral processing unit, the sending the request information to thecentral processing unit includes:

sending the request information to the central processing unit.

When the controlled device is connected to the central processing unitvia the control device, the sending the request information to thecentral processing unit includes:

sending the request information to the control device, and forwarding,by the control device, the request information to the central processingunit.

In one embodiment, the controlled device is any one of a sensor, avalve, and a motor.

In the embodiments of the present disclosure, the request informationfrom the controlled device is received, and the request informationcarries the type of the signal required by the controlled device. Theconfiguration instruction is sent to the control device according to thetype of the signal, to instruct the control device to configure the I/Oport according to the configuration instruction. The controlled deviceis connected to the central processing unit, or the controlled device isconnected to the central processing unit via the control device. Thus, acommunication link between the central processing unit and thecontrolled device is established, so that the central processing unitcan automatically generate the configuration instruction according tothe type of the signal required by the controlled device, to instructthe control device to configure the I/O port. In this way, the I/O portis automatically configured, thereby realizing unmanned operation, andavoiding the risk of manual improper operation.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a structural block diagram illustrating a system for manuallyconfiguring an I/O port according to related art.

FIG. 2 is a structural block diagram illustrating a system forautomatically configuring an I/O port according to one of embodiments ofthe present disclosure.

FIG. 3 is a flowchart of a method for automatically configuring an I/Oport according to a first embodiment of the present disclosure.

FIG. 4 is a flowchart of a method for automatically configuring an I/Oport according to an operational second embodiment of the presentdisclosure.

FIG. 5 is a flowchart of a method for automatically configuring an I/Oport according to an operational third embodiment of the presentdisclosure.

FIG. 6 is a flowchart of a method for automatically configuring an I/Oport according to a fourth embodiment of the present disclosure.

FIG. 7 is a flowchart of a method for automatically configuring an I/Oport according to an operational fifth embodiment of the presentdisclosure.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The present disclosure will be further described in detail below withreference to the accompanying drawings and embodiments. It should beunderstood that the embodiments described herein are only used toillustrate the present disclosure, but not intended to limit the presentdisclosure.

In the following description, suffixes such as “module”, “component” or“unit” used to indicate an element is only for facilitating theillustration of the present disclosure, and has no specific meaning initself. Therefore, the “module”, “component” or “unit” can be used in amixed manner.

In order to introduce the solutions of the following embodiments of thepresent disclosure more clearly, connection relations and signaltransmission processes between a central processing unit 2, a controldevice 3, and a controlled device 1 in the related embodiments arebriefly introduced. As shown in FIG. 1, an engineer first verifies andconfirms types and parameters of signals to be output from or input tothe external controlled device 1. Then, software codes in the controldevice 3 are set as parameters matching the types and the parameters ofthe signals to be output or input. Then, the central processing unit 2is manually configured according to the types and the parameters of thesignals to be output or input, so that the central processing unit 2outputs correct control information, which is transmitted to the controldevice via a communication signal 6. In this way, a corresponding I/Oport 5 of the control device 3 is configured to be in a correspondingmode. A function of an I/O port of the controlled device 1 is determinedby a type of the controlled device 1, and is fixed. The centralprocessing unit 2 configures a type of the I/O port 5 of the controldevice 3 to match a type of the I/O port of the controlled device 1according to the type of the I/O port of the controlled device 1.Finally, the controlled device 1 is connected to the control device 3via the I/O port 5. Corresponding to the above-mentioned controlprocess, the communication signal 6 is transmitted between the centralprocessing unit 2 and the control device 3. When the I/O port 5 issuccessfully configured, a device signal 7 is transmitted between thecontrolled device 1 and the control device 3. The control device 3includes an internal circuit 4 and the I/O port 5 therein. The devicesignal 7 may be transmitted to the internal circuit 4 via the I/O port5. It should be noted that when the I/O port 5 is successfullyconfigured, the device signal 7 may be transmitted between thecontrolled device 1 and the I/O port 5, and between the I/O port 5 andthe internal circuit 4. The communication signal 6 may be transmittedbetween the control device 3 and the central processing unit 2.

It should be noted that the controlled device 1 may generate an outputsignal and output it to the control device 3, and the control device 3may monitor working condition information of the controlled device 1according to the output signal. The controlled device 1 may furtherreceive an output signal (a control signal) generated by the controldevice 3, and the control device 3 may control the action of thecontrolled device 1 according to the output signal. The controlleddevice 1 may further simultaneously output a signal to the controldevice 3 and receive the output signal generated by the control device3, which is not limited in the present disclosure.

With reference to the specific introduction of the solutions in therelated art as described above and the background, it is known that inthe related art, the I/O port is manually configured, which is likely tocause a problem of device damage due to improper operation. To solvethis problem, embodiments of the present disclosure provide a system forautomatically configuring an I/O port. FIG. 2 is a structural blockdiagram illustrating a system for automatically configuring an I/O portaccording to one of the embodiments of the present disclosure. As shownin FIG. 2, the system includes a central processing unit 2, a controldevice 3, and a controlled device 1.

The controlled device 1 is connected to the central processing unit 2,or connected to the central processing unit 2 via the control device 3,and is configured to send request information to the central processingunit 2. The request information carries a type of the signal required bythe controlled device 1. The central processing unit 2, which isconnected to the control device 3, is configured to send a configurationinstruction to the control device 3 by transmitting a communicationsignal 6 according to the type of the signal. The control device 3 isconfigured to configure the I/O port 5 according to the configurationinstruction.

As shown by the dashed line in FIG. 2, in a case that the controlleddevice 1 is connected to the central processing unit 2, the controlleddevice 1 is connected to the central processing unit 2 via acommunication line or a feedback response line 8. In a case that thecontrolled device 1 is connected to the central processing unit 2 viathe control device 3, the controlled device 1 is connected to thecontrol device 3 via the communication line or the feedback responseline 8.

It should be noted that the controlled device 1 may be connected to thecentral processing unit 2 via the communication line or the feedbackresponse line 8. When the controlled device 1 is far away from thecentral processing unit 2, it is inconvenient to connect the controlleddevice 1 to the central processing unit 2. The controlled device 1 isalso connected to the control device 3 via the communication line or thefeedback response line 8, thus a communication path with the centralprocessing unit 2 is established indirectly. Accordingly, an operationof automatic identification and a port matching is performed between thecontrolled device 1 and the control device 3.

In a possible embodiment, the central processing unit 2 is configured toreceive the request information sent by the controlled device 1 when thecontrolled device 1 is connected to the central processing unit 2, andreceive the request information sent from the controlled device 1 to thecontrol device 3 and forwarded by the control device 3 when thecontrolled device 1 is connected to the central processing unit 2 viathe control device 3. The control device 3 is further configured to,after configuring the I/O port 5 according to the configurationinstruction, feedback configuration information of the I/O port to thecentral processing unit 2. The central processing unit 2 is furtherconfigured to, when receiving the configuration information of the I/Oport, send control information to the control device 3 according to thetype of the signal (when the type of the signal is an input signal), toinstruct the control device 3 to send the signal to the controlleddevice 1, so that a communication connection between the controlleddevice 1 and the control device 3 is established via the I/O port 5 andworks normally. In one embodiment, the central processing unit 2 isfurther configured to, after receiving the information that the I/O porthas been configured successfully, send identification information to thecontrolled device 1 according to the type of the signal (when the typeof the signal is an output signal), to inform the controlled device 1that the configuration for the I/O port has been succeeded, so that thecontrolled device 1 sends the signal to the control device 3 to enable anormal operation therebetween. The controlled device 1 shown in FIG. 2includes the internal circuit 4 and the I/O port 5. When the I/O port 5is successfully configured, the device signal 7 may be transmittedbetween the controlled device 1 and the I/O port 5. The device signal 7may be transmitted between the I/O port 5 and the internal circuit 4.The communication signal 6 may be transmitted between the control device3 and the central processing unit 2.

The device signal 7 is a driving or control signal (usually an analogsignal) such as a voltage and a current transmitted between the deviceswhen the devices are operating normally (after the I/O port 5 issuccessfully configured). The communication signal 6 is a signal(usually a digital signal, usually with an agreed signal format)transmitted during communication between devices.

Thus, a communication link between the central processing unit and thecontrolled device is established, so that the central processing unitcan automatically generate the configuration instruction according tothe type of the signal required by the controlled device, to instructthe control device to configure the I/O port. In this way, the I/O portis automatically configured, realizing unmanned operation, and avoidingthe risk of manual improper operation.

FIG. 3 shows a method for automatically configuring the I/O portaccording to a first embodiment of the present disclosure. The method isapplied to the central processing unit of the system shown in FIG. 2.The method includes the following steps.

At step S101, request information from a controlled device is received.

The request information carries a type of a signal required by thecontrolled device.

At step S102, a configuration instruction is sent to a control deviceaccording to the type of the signal, to instruct the control device toconfigure the I/O port according to the configuration instruction.

The controlled device is connected to the central processing unit. Inone embodiment, the controlled device is connected to the centralprocessing unit via a control device.

Thus, a communication link between the central processing unit and thecontrolled device is established, so that the central processing unitcan automatically generate the configuration instruction according tothe type of the signal required by the controlled device, to instructthe control device to configure the I/O port. Thus the I/O port isautomatically configured, realizing the unmanned operation, and avoidingthe risk of manual improper operation.

The controlled device is any one of a sensor, a valve, and a motor. Thecentral processing unit is a kind of a master computer, and the controldevice is a kind of a slave computer.

In a possible embodiment, when the controlled device is connected to thecentral processing unit, the step S101 of receiving the requestinformation from the controlled device includes receiving the requestinformation sent by the controlled device. When the controlled device isconnected to the central processing unit via the control device, thestep S101 of receiving the request information from the controlleddevice includes receiving the request information sent from thecontrolled device to the control device and forwarded by the controldevice.

It is understood that the request information is the informationrequesting the central processing unit to provide services for thecontrolled device. The central processing unit may instruct the controldevice to configure the I/O port according to the request information,to establish a connection basis for subsequent services provided for thecontrolled device.

In a possible embodiment, FIG. 4 is a flowchart of a method forautomatically configuring an I/O port according to a second embodimentof the present disclosure. As shown in FIG. 4, after the step S102 ofsending the configuration instruction to the control device according tothe type of the signal to instruct the control device to configure theI/O port, the method further includes the following steps.

At step S103, configuration information of the I/O port fed back by thecontrol device is received.

At step S104, an instruction is sent to the control device or acontrolled device according to the type of the signal.

In a possible embodiment, the type of the signal is any one of thefollowing six types: an analog voltage input signal, an analog currentinput signal, a digital voltage input signal, an analog voltage outputsignal, an analog current output signal, and a digital voltage outputsignal. Therefore, when the instruction is sent to the control deviceaccording to the type of the signal, as shown in FIG. 5, a flowchart ofa method for automatically configuring an I/O port according to a thirdembodiment of the present disclosure, the step S104 of sending theinstruction to the control device according to the type of the signalincludes a step S1041. At the step S1041, when the type of the signal isany one of the analog voltage input signal, the analog current inputsignal, and the digital voltage input signal, control information issent to the control device, so that the control device sends the signalto the controlled device according to the control information.

The instruction includes the control information. It is understood thatwhen the controlled device requires the control device to input thesignal to the controlled device, the central processing unit may sendthe instruction to the control device according to the type of thesignal. In this case, the instruction is the control information, andthe control device may send the signal to the controlled deviceaccording to the control information.

In a possible embodiment, when the controlled device is connected to thecentral processing unit, and when the instruction is sent to thecontrolled device according to the type of the signal, as shown in FIG.6, a flowchart of a method for automatically configuring an I/O portaccording to a fourth embodiment of the present disclosure, the stepS104 of sending the instruction to the controlled device according tothe type of the signal includes a step S1042. At the step S1042, whenthe type of the signal is any one of the analog voltage output signal,the analog current output signal, and the digital voltage output signal,identification information is sent to the controlled device. Theinstruction includes the identification information. The identificationinformation is configured to inform the controlled device that theconfiguration for the I/O port has been succeeded, so that thecontrolled device sends the signal to the control device.

It is understood that when the controlled device needs to output thesignal to the control device, the central processing unit may send aninstruction to the controlled device according to the type of thesignal. In this case, the instruction is the identification information.The identification information is configured to inform the controlleddevice that the I/O port has been successfully configured, and that thecontrolled device may output the signal to the control device.

In a possible embodiment, when the controlled device is connected to thecentral processing unit via the control device, and when the instructionis sent to the controlled device according to the type of the signal,the step S104 of sending the instruction to the controlled deviceaccording to the type of the signal includes: when the type of thesignal is any one of the analog voltage output signal, the analogcurrent output signal, and the digital voltage output signal, sendingthe identification information to the control device, so that thecontrol device forwards the identification information to the controlleddevice. The identification information is configured to instruct thecontrolled device to send the signal to the control device.

It is understood that the difference between this embodiment and theprevious embodiment is that, in the previous embodiment, a directconnection relation is established between the central processing unitand the controlled device, thus the identification information may besent to the controlled device. However, in this embodiment, a connectionrelation between the central processing unit and the controlled deviceis established by means of the control device, thus the identificationinformation needs to be sent to the control device firstly, and then thecontrol device forwards the identification information to the controlleddevice.

It should be noted that the controlled device is any sensor, such as atemperature sensor, a driving motors, or any other actuator. Whenpowered on, the controlled device sends the request information firstlyto the central processing unit via the communication line or thefeedback response line, or sends the request information to the centralprocessing unit via the control device. The request information carriesthe type of the input or output signals required by the controlleddevice itself. The central processing unit generates the configurationinstruction according to the type of the signal, and sends theconfiguration instruction to the control device. After receiving theconfiguration instruction, the control device may complete configuringthe I/O port and feedback the information that the I/O port has beensuccessfully configured to the central processing unit. After receivingthe information that the I/O port has been successfully configured, thecentral processing unit may inform the controlled device that theconfiguration for the I/O port is completed when the type of the signalis a type of an output signal (that is, the controlled device needs tooutput the signal to the control device). In one embodiment, afterreceiving the information that the I/O port has been successfullyconfigured, the central processing unit may send control information tothe control device, so that the control device outputs the signal to thecontrolled device. In addition, relevant codes need to be added to anunderlying program of the control device, to achieve automaticconfiguration for the I/O port and transmission of signals when theconfiguration is completed.

When the type of the signal is the type of the output signal, thecentral processing unit may inform the controlled device that the I/Oport has been successfully configured, so that the controlled device canoutput the signal to the control device, preventing the control devicefrom being damaged due to receiving the signal without preparation. Inaddition, manual operation for the controlled device to enable it outputthe signal is avoided, improving the configuration efficiency. It shouldbe noted that, after receiving the information that the I/O port hasbeen successfully configured, the controlled device outputs the signal.In one embodiment, a prompt message may be issued to remind the user tomanipulate the controlled device to enable it to output the signal. Insome embodiments, these two modes are set by the user according toactual needs, and are not limited herein by the present disclosure.

Embodiments of the present disclosure illustrate a method forautomatically configuring an I/O port. The method is applied to thecontrolled device shown in FIG. 2. The method includes sending requestinformation to a central processing unit. The request informationcarries a type of a signal required by the controlled device, so thatthe central processing unit sends a configuration instruction to acontrol device according to the type of the signal. The configurationinstruction is used to instruct the control device to perform aconfiguration for the I/O port. The controlled device is connected tothe central processing unit, or the controlled device is connected tothe central processing unit via the control device.

In a possible embodiment, in a case that the controlled device isconnected to the central processing unit, the sending the requestinformation to the central processing unit includes sending the requestinformation to the central processing unit. In a case that thecontrolled device is connected to the central processing unit via thecontrol device, the sending the request information to the centralprocessing unit includes sending the request information to the controldevice, so that the control device forwards the request information tothe central processing unit.

Thus, a communication link between the central processing unit and thecontrolled device may be established, so that the central processingunit may automatically generate the configuration instruction accordingto the type of the signal required by the controlled device, to instructthe control device to configure the I/O port. Thus, the I/O port isautomatically configured, realizing the unmanned operation and avoidingthe risk of manual improper operation.

FIG. 7 is a flowchart of a method for automatically configuring an I/Oport according to a fifth embodiment of the present disclosure. As shownin FIG. 7, the method includes following steps.

At Step S501, a controlled device (a controlled module) sends a type ofa signal.

At Step S502, a central processing unit sends a configurationinstruction to a control device.

At Step S503, the control device automatically configures an I/O port.

At Step S504, whether a configuration has been successfully completed isdetermined. If yes, the step S405 is performed. If not, the step S403 isperformed;

Step S505: the central processing unit instructs the control device tooutput the signal, or the central processing unit informs the controlleddevice of outputting the signal.

Thus, a communication link between the central processing unit and thecontrolled device may be established, so that the central processingunit may automatically generate the configuration instruction accordingto the type of the signal required by the controlled device, to instructthe control device to configure the I/O port. Thus, the I/O port isautomatically configured, realizing the unmanned operation and avoidingthe risk of the manual improper operation.

It should be noted that in this disclosure, the terms “include”,“comprise” or any other variants thereof are intended to encompassnon-exclusive inclusion, so that a process, a method, an article, or adevice including a series of elements not only includes those elements,but also includes other elements not explicitly listed, or includeselements inherent to the process, the method, the article, or thedevice. If there are no more limitations, the element defined by thesentence “including a . . . ” does not exclude the existence of otheridentical elements in the process, the method, the article, or thedevice including the element.

The sequence numbers of the above-mentioned embodiments of the presentdisclosure are only for description, and do not represent the prioritiesof the embodiments.

Through the description of the above embodiments, the methods of theabove-mentioned embodiments can be implemented by means of software anda necessary general hardware platform. Of course, it can also beimplemented by hardware, but in many cases the former is preferable.Based on this understanding, the embodiments of the present disclosureessentially or the part thereof that contributes to the related art maybe embodied in a form of a software product. The computer softwareproduct is stored in a storage medium (such as ROM/RAM, magnetic disk,optical disc), and includes several instructions to enable a mobileterminal (which is a mobile phone, a computer, a server, an airconditioner, a network device, or the like) to perform the methods ofthe various embodiments of the present disclosure.

What is claimed is:
 1. A system for automatically configuring an I/Oport, comprising a central processing unit, a control device, and acontrolled device, wherein: the controlled device is connected to thecentral processing unit or connected to the central processing unit viathe control device, and is configured to send request information to thecentral processing unit, and the request information carries a type of asignal required by the controlled device; the central processing unit isconnected to the control device, and is configured to send aconfiguration instruction to the control device according to the type ofthe signal; and the control device is configured to configure the I/Oport according to the configuration instruction, and further configuredto, after configuring the I/O port according to the configurationinstruction, feedback information that the I/O port has beensuccessfully configured to the central processing unit; the centralprocessing unit is further configured to, after receiving theinformation that the I/O port has been successfully configured, send aninstruction to the control device or the controlled device according tothe type of the signal, wherein the central processing unit beingconfigured to send the instruction to the control device or thecontrolled device according to the type of the signal comprises: whenthe type of the signal is an input signal, the central processing unitbeing configured to send control information to the control device, toinstruct the control device to send the input signal to the controlleddevice; and when the type of the signal is an output signal, the centralprocessing unit being configured to: when a direct connection relationis established between the central processing unit and the controlleddevice, send identification information to the controlled device, andwhen a connection relation between the central processing unit and thecontrolled device is established by means of the control device, sendthe identification information to the controlled device by means of thecontrol device; wherein, the identification information is configured toinform the controlled device that a configuration for the I/O port hasbeen succeeded, so that the controlled device sends the output signal tothe control device.
 2. The system according to claim 1, wherein: whenthe controlled device is connected to the central processing unit, thecontrolled device is connected to the central processing unit via acommunication line or a feedback response line; and when the controlleddevice is connected to the central processing unit via the controldevice, the controlled device is connected to the control device via thecommunication line or the feedback response line.
 3. The systemaccording to claim 1, wherein the central processing unit is furtherconfigured to receive the request information sent by the controlleddevice when the controlled device is connected to the central processingunit, and receive the request information sent from the controlleddevice to the control device and forwarded by the control device whenthe controlled device is connected to the central processing unit viathe control device.
 4. The system according to claim 1, wherein: thecontrol device comprises an internal circuit and the I/O port, and adevice signal is transmitted to the internal circuit via the I/O port.5. A method for automatically configuring an I/O port, comprising: acentral processing unit receiving a request information from acontrolled device, the request information carrying a type of a signalrequired by a controlled device; and the central processing unit sendinga configuration instruction to a control device according to the type ofthe signal, and instructing the control device to configure the I/O portaccording to the configuration instruction; the controlled device beingconnected to the central processing unit, or the controlled device beingconnected to the central processing unit via the control device thecentral processing unit receiving information fed back by the controldevice that the I/O port has been successfully configured; the centralprocessing unit sending an instruction to the control device or to thecontrolled device according to the type of the signal, wherein thecentral processing unit sending the instruction to the control device orthe controlled device according to the type of the signal comprises:when the type of the signal is an input signal, the central processingunit sending control information to the control device, to instruct thecontrol device to send the input signal to the controlled device; andwhen the type of the signal is an output signal, the central processingunit sending identification information to the controlled device when adirect connection relation is established between the central processingunit and the controlled device, and sending the identificationinformation to the controlled device by means of the control device whena connection relation between the central processing unit and thecontrolled device is established by means of the control device;wherein, the identification information is configured to inform thecontrolled device that a configuration for the I/O port has beensucceeded, so that the controlled device sends the output signal to thecontrol device.
 6. The method according to claim 5, wherein: when thecontrolled device is connected to the central processing unit, thecentral processing unit receiving the request information from thecontrolled device comprises: the central processing unit receiving therequest information sent by the controlled device; and when thecontrolled device is connected to the central processing unit via thecontrol device, the central processing unit receiving the requestinformation from the controlled device comprises: the central processingunit receiving the request information sent from the controlled deviceto the control device and forwarded by the control device.
 7. The methodaccording to claim 5, wherein the type of the signal comprises the inputsignal and the output signal; the input signal is any one of followingthree types: an analog voltage input signal, an analog current inputsignal, a digital voltage input signal, and the output signal is any oneof following three types: an analog voltage output signal, an analogcurrent output signal, and a digital voltage output signal.
 8. Themethod according to claim 5, wherein the controlled device is any one ofa sensor, a valve, and a motor.
 9. A computer device, comprising amemory, a processor, and computer programs stored in the memory andexecuted by the processor, wherein the programs, when executed by theprocessor, cause the processor to perform the method for automaticallyconfiguring the I/O port according to claim
 5. 10. A non-transitorystorage medium containing computer executable instructions, wherein thecomputer executable instructions, when executed by a computer processor,cause the computer processor to perform the method for automaticallyconfiguring the I/O port according to claim 5.